CLICK for More Info Online g-Link Torque-Arm Watt-Link Rear Suspensions for GM Muscle Cars and Custom Installations Direct-Fit Suspensions 5857-A10-02 1964-67 Chevelle/A-Body 5857-A20-02 1968-72 Chevelle/A-Body 5857-F10-02 1967-69 Camaro/Firebird 5857-F21-02 1970-73 Camaro/Firebird 5857-F22-02 1974-81 Camaro/Firebird 5857-X10-02 1962-67 Nova (Chevy II) 5857-X20-02 1968-72 Nova (X-Body) 5857-F10-02 NOTE: Requires FAB9 or Ford 9” housing Custom-Fit Clip and Suspension 7155 Torque Arm Frame Clip 5857-U55-05 Suspension for 7155 Clip 5857-U02-04 Use with OEM Frames NOTE: Requires FAB9 or Ford 9” housing 7155 with 5857-U55-04 Torque Arm Suspension Conversion Features/Benefits: • Immediate acceleration/deceleration The g-Link torque arm systems directly replace the OEM rear response suspension for remarkably improved handling and performance. Each system is comprised of a fabricated torque arm, a pair of • Increases ability to steer with throttle g-Link pivotball tubular-steel or billet-aluminum lower arms, a Watts • Tremendous cornering capability link lateral locator, VariShock coil-overs, weld-on frame brackets, • Improves overall braking and optional billet-arm splined-end anti-roll bar. Together these • Watts link lateral locater components create a superior handling suspension system with • Works with mini-tubs multiple geometry and setting adjustments for further tuning and • Exclusive use of spherical pivot links improvement. Subframe g-Connectors and center support create the • Tubular or billet-aluminum lower arms torque arm chassis mount and are required for operation; these items sold separately. Adjustments: To accommodate ultra-wide tire and wheel combinations mini-tub • Instant center (lower arm position) configurations are available along with the custom-fit suspension or frame clip for other applicaitons. • Roll center (Watts link) • Pinion angle (serrated hardware) Installation requires an optional FAB9 direct-fit rearend housings or • Wheelbase alignment OEM-style Ford 9”, which requires welding of suspension brackets. • Shock valving (single/double/4-way) 1 Fabricated Torque Arm The Chassisworks torque arm is a bolt-on, pinion angle adjustable, traction device. Similar to traction bars, the arm converts torque to downward force at the tires, but has the benefit of providing improved traction during both straight line and cornering acceleration. The arm mounts at three points; a swiveling connection at the g-Connector center support, and two adjustable mounts at the rearend housing. As torque is applied to the rear wheels, the arm (now fixed to the housing) rotates to push upward at the chassis mount while simultaneously pushing downward onto the wheels. Downward force creates additional traction that is equally distributed to each tire regardless of current body roll or suspension travel state. Conversely, braking stability is also improved by the arm pulling downward on the chassis when the brakes are applied. The amount of unwanted brake dive (car pitching forward) is greatly reduced as the car now squats under hard braking, increasing driver confidence. This allows you to increase rear Torque arm houisng mounts capture the third-member brake bias, resulting in shorter stopping distance. pinion support and rearmost billet end of arm at the pinion angle adjustment mechanism. The arms rigid construction and extremely stable mounting points provide instant torque control, increasing the driver’s ability to steer with the throttle. Throttle response and acceleration are immediate due to an increase in available traction and lack of leaf spring “wrap-up,” a common source Pinion Support Mounts of wheel hop. Only 1-1/2 to 2 degrees of negative pinion angle is required versus 4 to 7 degrees when relying on leaf springs for torque control. The drive line remains closer to its ideal, Standard Ford 9” and most efficient position at all times. Strange S-Series The torque arm’s tapered design is achieved by combining lasercut panels with CNC-machined ends. Sheetmetal corners along the length of the arm are overlapped for improved strength and better weld penetration. The front mount and housing mount are highly stressed areas of the arm and are billet steel for much greater strength. The torque arm and all supporting hardware are powder-coated or zinc plated for corrosion resistance. Strange HD Pro Aluminum 2 Sliding-Link Chassis Pivot Mounts Due to the varied movement of the rearend housing during suspension travel, the torque arm cannot be solidly mounted to the chassis. A sliding eye mount inserted into a greased bore at the front of the arm allows free rotation and fore/aft movement. A wiper seal keeps dirt out and grease in. This is a superior method to a bellowed boot, which is easily damaged and deteriorated by exhaust heat. The torque arm chassis mount comes in poly-bushing and pivotball versions, both offering excellent performance. The pivotball link is a maintainable joint that can be tightened if ever needed. For less transferred noise or vibration, the poly-bushing link should be selected. Pivotball Mount Zerk Boss Billet Receiver Billet Pivot Heavy Wall Wiper Seal Grease Zerk Spiral Grease Polymer Race Channel Pivot Ball Set Screw Retaining Ring Poly Mount Billet Pivot Billet Receiver Grease Zerk Steel Sleeve Poly Bushing 3 Torque Arm Alignment Pinion Angle Adjustment A second adjustment feature allows precise left to A unique locking mechanism was designed to precisely right alignment of the arm and chassis mount. A pair adjust pinion angle. Serrated tabs, welded to the housing, of flanged adjusters, when rotated, shift the rear and matching washers interlock when tightened and section of the arm between the mounting tabs and allow incremental adjustment. This method eliminates any aligns the position of the front pivot. chance of the adjustment shifting during heavy use. CNC-Machined Interlocking Serrrations Alignment Adjuster Serrated Housing Tab 1/2” Bolt Grade 8 Serrated Washer High-Stregth Arm Base The section of torque arm attached to the housing is subjected to extremely high levels of stress. To reliably handle the performance requirements of modern pro-touring builds, finite element analysis (FEA) testing was used to develop a tapered billet steel arm base. Material uncricital to the overall strength of the component is removed, leaving the large end hollowed out and reducing weight. 4 Pivotball g-Link Lower Arms g-Link suspension systems are available with use on performance-driven street or track multiple lower arms styles depending upon applications. Pivotball mechanisms are easily vehicle applications. Each arm style features maintained via greas zerk and can be tightened low-friction pivotball mechanisms in each end to remove play as they wear. resulting in the ultimate performance link for Billet g-Link Arm • Billet aluminum • Fixed length • Anodized finish • Centered pivotball g-Link Arm • Tubular steel • Adjustable length • Powder-coat finish • Centered or high- clearance offset pivotball Centered Pivotball for stock Offset Pivotball for narrowed wheel tub configuration. mini-tub configuration. Grease zerk High-misalignment pivotball Threaded retaining ring Billet housing Polymer races with grease grooves Adjustable Geometry Lower control arm axle mounts feature multiple positions to adjust chassis anti-squat and optimize vehicle handling. Adjustable Length Tubular-steel g-Link lower arms are adjustable for wheelbase variations and precise housing alignment. 5 Watts Link Locator The Watts link assembly is responsible for keeping the rearend housing centered in relation to the chassis and defining the rear suspension’s roll center. The assembly is comprised of two staggered links mounted to the chassis and a central pivot attached to the rearend housing. When cornering, link tubes handle forces in the most structurally efficient method, compression and tension, rather than as a bending member such as a leaf spring suspension. This results in immediate, positive location of the rearend when entering and exiting corners. As the rearend housing moves vertically the central pivot rotates slightly to follow the two arcs defined by the link assemblies. This pivoting action splits the difference between the two arcs allowing the housing to travel in a perfectly straight Weld-on frame brackets. 70-81 Camaro bracket shown. line. Vehicle performance benefits include extremely consitent cornering balance and identical turn-in characteristics for both left and right-hand turns, neither possible with panhard bars or leaf springs. Adjustable Roll Center The Watts pivot mounting position, behind the rearend center section, defines the rear suspension roll center. The pivot can be moved to one of four positions to raise or lower the roll center height, which directly affects vehicle handling. Raising the roll center tunes toward vehicle oversteer. Lowering the pivot tunes toward understeer. Four-position Watts pivot mount. 6 Watts Pivot Assembly Base Plate • Billet aluminum • Four pivot positions • Spacer counterbores • Stable 4-point mount Watts Pivot • Billet steel • Sealed ball bearings Top Plate • No stiction or free play • Laser-cut steel • Double-shear mount • Bridges three fasteners • Zero side deflection “As the rearend housing moves vertically the central pivot rotates slightly to follow the two arcs defined by the link assemblies. This pivoting action splits the difference between the two arcs allowing the housing to travel in a perfectly straight line.” 7 Rear Frame and Options The rear frame is formed from CNC-mandrel-bent, professionally spray-arc-welded by Chassisworks’ 4 x 2 x .120”-wall steel tubing and designed with welding staff in a controlled environment using minimal rise over the rearend housing to allow more computer-designed fixtures and production-quality room in the rear seat and trunk areas. Four-by-two equipment. Alternately, frames can be order in inch front crossmembers are equipped with a 1 x 2” subassembly kit form with lower-arm, shock, and tubular oval driveshaft loop and dual 4”-ID exhaust anti-roll-bar mounts factory-welded to each frame ports.